Improvement in machinery for folding tin



UNITED STATES 'PATENT OEEICE.

CHARLES H. RAYMOND, OF WOODSTOOK, VERMONT.

IMPROVEMENT IN MACHINERY FOR FOLDING TIN.

Specification forming part of Letters Patent No. 54,599, dated May 8,1866.

To all whom fit may concern s Be it known that I, OHARLESVH. RAYMOND, ofWoodstock, in the county of Windsor and State of Vermont, have inventedan Improved Machine for Folding Tin or Metallic Plate; and I do herebydeclare the same to be fully described in the following specificationand represented in the-accompanying drawings, of which- 'Figure l is atop view, Fig. 2 a side elevation, and Fig. 3 transverse section, ot'the said machine.

In carrying out lny invention Icombiue with the adjustable cap of thefolding-bar of the machine a means or mechanism for elevating such capup to a level or so as to be even with the lower of the holding-jaws,preparatory to a plate of tin being inserted between the said jaws andagainst the adjustable gage,l however such cap may be adjusted withreference to the upper jaw.

The machine to which my invention is applied is substantially like whatis in common use and well known.

In the drawings, A is the stationary jaw, and B the movable jaw. Thislatter jaw is provided with an adjustable gage, C, and is hinged to twoposts or standards, D D, erected on a plate, E. The movable jaw is alsohinged or connected to a bar,- a, which is supported at its extremitiesby two levers, b l), which carry friction-rollers c c and have theirfulcra in posts d d, the whole heilig arranged as represented in thedrawings.

Eccentrics or cams c c, attlxed to the journalsffof the folding-bar F,are placed directl y over and so as to operate against thecircumferences of the friction-rollers. The journals of the folding-barare supported in boxes g g, arranged at the tops of posts Gr G, and thesaid folding-bar is disposed with respect to such journals in manner asrepresented in the drawings. The adjustable ca p of the foldingbar isexhibited at h, it being a plate of metal placed on the top of andconnected to the folding-bar by hinges t' t. An adjusting-screw isusually xed in or so applied to the foldingbar as to work against thecap h, in order to adjust it with reference to the upper jaw as may bedesirable to insure the required position or distance ofthe lip orbent-over portion of a plate with reference to the rest of such plateafter the said plate may have been subjected to the operation of themachine. This adjusting-screw (which is shown at 7c) I arrange so as toscrew through the middle `oit' the folding-bar and against a projectionor deep flange, l, extending down from the cap h and along the innerside of the folding-bar F. The screw, by being screwed against theiiange, may be made to force the cap hupward more or less and effect itsproper adjustment with reference to the upper jaw.

Two or any other suitable number of setscrews, a a, go through theilange, screw into the bar F, and serve to tix the cap hin positionafter it may have been duly adjusted by the screw 7c. The positions ofthese screws, as well as the form ot' the flange, are exhibited in Figs.4 and 5, the first of whichfigures is an inner-side view and the seconda transverse section ot' the folding-bar F and the flange and cap. Theiange at its middle projects somewhat below the folding-bar, in orderthat the part l so projecting while the folding-bar is in the act ofbeing turned down may be moved into contact with and up an inclined pplane or ca1n,m, arranged as shown in Figs.

2 and 3. This cam serves to elevate the cap up to a level, or so as tobe even with the top surface of the stationary jaw', in order that a`plate of metal, while being inserted between the jaws, may meet with noobstruction from the lower or stationary jaw.

I do not claim the combination of the folding-bar F and its adjustablecap h, the stationary and movable jaws A B, or the same and theadjustable gage c; but

I claim- The combination of the same and the cam m and flange Z, orequivalentmechanism, for effecting the elevation of the cap up to thelevel of the top of the upper jaw, under circumstances and for thepurpose substantially as specied.

CHARLES H. RAYMOND.

Witnesses:

R. H. EDDY, F. `P. HALE, Jr.

